Newbury Electronics here in the UK has a very fast and cheap prototyping service for double-sided PCBs. I just paid 30 GBP (plus tax and delivery) for a PCB with 24 hour turn-around - I had it in my hands three days after placing the order. The quality looks OK but I haven’t tried it yet.
http://www.pcbtrain.co.uk/express_service.php
Leon
Hi Leon,
Does the PCB have the green solder resists on them? I would be a bit difficult to solder without.
I use http://www.pcb-pool.com/ for my PCBs excellent quality but have to wait 8 working days.
sk_uk
No solder-mask or silk, it’s a ‘bare-bones’ service to minimise the cost. I normally use PCB-Pool, as well, or make my own boards. I don’t mind the lack of solder-mask, I’m used to not having it with my home-made PCBs. 
Leon
I used to make my own PCB is well but double sided is a bit tricky.
Then there is etching and drilling. Gone thru lots of drill bits.
The rate with pcb-pool is reasonable especially without the solder resist but you do have to wait 8 days.
Might give pcb train a go.
I’ve just soldered a 100 pin QFP CPLD (0.5 mm lead spacing) to that prototype board I got from PCB Train with their 24 hour service. It looks fine although the silver plating they use instead of the normal tinning was a bit hard to solder, and I had to go over each row of leads twice, the second time under a microscope. I use drag-soldering, BTW, on this type of component, and normally only use the microscope for final checking and removal of solder bridges.
Leon
Silver plating? Why would they use silver? It tarnishes if you look at it cross-eyed. I’ve done some jewelry making and know that you have to use plenty of flux when soldering silver with a torch and silver-solder.
I know it’s a good conductor, but I wouldn’t think that would be all that important for plating contacts compared to oxidation resistance.
I’m just curious, clearly there’s something I don’t understand.
Thanks,
Keith